Attrition bias in longitudinal research involving adolescent psychiatric outpatients.

摘要: This study investigated whether the degree of difficulty contacting participants at follow-up in a longitudinal adolescent psychiatric outpatients is associated with baseline and/or Axis I and II psychopathology sociodemographic variables. At baseline, 101 15 to 18 years old were assessed using standardized diagnostic instruments, 97 reinterviewed, face-to-face, 2-year follow-up. A hierarchical tracking strategy meticulous contact log used. More than one quarter sample required multiple efforts be located interviewed. The presence number disorders was significantly difficulty. Baseline variables not findings indicate that studies compare dropouts completers utilizing characteristics are likely underestimate extent